title: Crystallization and preliminary X-ray diffraction analysis of the hyperthermophilic Sulfolobus islandicus lactonase.
abstract: Phosphotriesterase-like lactonases (PLLs) constitute an interesting family of enzymes that are of paramount interest in biotechnology with respect to their catalytic functions. As natural lactonases, they may act against pathogens such as Pseudomonas aeruginosa by shutting down their quorum-sensing system (quorum quenching) and thus decreasing pathogen virulence. Owing to their promiscuous phosphotriesterase activity, which can inactivate toxic organophosphorus compounds such as pesticides and nerve agents, they are equally appealing as potent bioscavengers. A new representative of the PLL family has been identified (SisPox) and its gene was cloned from the hyperthermophilic archeon Sulfolobus islandicus. Owing to its hyperthermostable architecture, SisPox appears to be a good candidate for engineering studies. Here, production, purification, crystallization conditions and data collection to 2.34 Å resolution are reported for this lactonase from the hyperthermophilic S. islandicus.
authors.affiliation: Architecture et Fonction des Macromolécules Biologiques, CNRS-Aix Marseille Université, 13288 Marseille, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Gotthard
authors.forename: Julien
authors.initials: J
authors.lastname: Hiblot
authors.forename: Mikael
authors.initials: M
authors.lastname: Elias
authors.forename: Eric
authors.initials: E
authors.lastname: Chabrière
mesh_terms: D000595:Amino Acid Sequence; D019843:Archaeal Proteins / Q000737:chemistry* / Q000235:genetics; D002265:Carboxylic Ester Hydrolases / Q000737:chemistry* / Q000235:genetics; D003460:Crystallization; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D008969:Molecular Sequence Data; D016944:Sulfolobus / Q000201:enzymology*; D014961:X-Ray Diffraction
chemical_list: D019843:Archaeal Proteins; D002265:Carboxylic Ester Hydrolases; C020579:gluconolactonase